Computation of Post Differential Payments

A decision was requested concerning the proper method of computation of the post differential allowance authorized under 5 U.S.C. 5925. The agency properly computed the post differential ceiling on a biweekly rather than annual basis since the Standardized Regulations require implementation of the ceiling by reduction in the per annum post differential rate to a lesser percentage of the basic rate of pay than otherwise authorized. The rule that the method of computation prescribed for basic pay by 5 U.S.C. 5504(b) shall be applied as well in the computation for aggregate compensation payments to officers and employees assigned to posts outside the United States who are paid additional compensation based upon a percentage of their basic compensation rates applies to post differential payments under section 552.